chore(package): update karma to version 3.0.0

Closes #4

Author: greenkeeper[bot]

package.json

@@ -14,7 +14,7 @@
     "@gnodi/eslint-config": "^0.1.0",
     "istanbul": "^0.4.0",
     "jasmine": "^2.5.2",
-    "karma": "^1.3.0",
+    "karma": "^3.0.0",
     "karma-chrome-launcher": "^2.0.0",
     "karma-coverage": "^1.1.1",
     "karma-firefox-launcher": "^1.0.0",